All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 21 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: WD50EFRX SMART Fix
PostPosted: September 10th, 2019, 10:59 
Offline

Joined: September 10th, 2019, 10:48
Posts: 9
Location: Italy
Hello!
I've successfully recoveded a WD50EFRX that was reporting as zero-bytes to the OS and Bios.
I've tried several tools, among them the WDR Demo.
Now I can read the data, but I have erased by mistake all SMART data (all fields to zero)
I would want to insert some meaningful data there, since I have a screenshot of the SMART data of that same drive made a couple of months before it failed.
Is this possibile?
Thanks everyone!


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 13th, 2019, 9:12 
Offline

Joined: September 10th, 2019, 10:48
Posts: 9
Location: Italy
Ehm.. someone please give me an hand? :)
Thanks!


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 18th, 2019, 4:13 
Offline

Joined: September 10th, 2019, 10:48
Posts: 9
Location: Italy
Did I do something wrong?


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 18th, 2019, 9:53 
Offline

Joined: August 18th, 2010, 17:35
Posts: 3358
Location: Massachusetts, USA
I believe the community does not know of an easy way to accomplish that, therefore the lack of responses.
In theory, perhaps adding info into the SMART mod(s) could be done manually, but it would be more difficult.
The question is why would you want to do this?

_________________
Hard Disk Drive, SSD, USB Drive and RAID Data Recovery Specialist in Massachusetts


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 18th, 2019, 14:37 
Offline
User avatar

Joined: March 6th, 2010, 3:46
Posts: 433
Location: Kolding | Denmark
+1 The question is why would you want to do this?

_________________
Digitalsupport Data Recovery
https://digitalsupport.dk


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 18th, 2019, 19:33 
Offline

Joined: September 10th, 2019, 10:48
Posts: 9
Location: Italy
Because I use SnapRAID on several arrays, and it has a disk failure prediction algorithm that actually saved me several times.
The failure prediction makes calculations based on SMART data, hence a disk with 0 errors, 0 uptime and so on will have 0% failure probability.


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 18th, 2019, 21:58 
Offline

Joined: August 18th, 2010, 17:35
Posts: 3358
Location: Massachusetts, USA
Great. Did the drive have any SMART attributes concerns with Pending or Reallocated Sectors?
>If not, then throw back in production and keep an eye on it. I believe the SMART attributes with continue to update on their own.
>It yes, then time to replace.

_________________
Hard Disk Drive, SSD, USB Drive and RAID Data Recovery Specialist in Massachusetts


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 19th, 2019, 3:24 
Offline

Joined: May 13th, 2019, 7:50
Posts: 73
Location: Nederland
So IOW you're gonna use this drive as array member again?

_________________
www.disktuna.com - photo repair service


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 23rd, 2019, 5:24 
Offline

Joined: September 10th, 2019, 10:48
Posts: 9
Location: Italy
Well, since it was just a Software error caused by an experiment I made, and the disk had no SMART errors, I trust it can work just fine..


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 23rd, 2019, 6:57 
Offline
User avatar

Joined: December 4th, 2012, 1:35
Posts: 3439
Location: Adelaide, Australia
vomig wrote:
Well, since it was just a Software error caused by an experiment I made, and the disk had no SMART errors, I trust it can work just fine..


It is the first time you have said the disk had no smart errors beforehand. If you had mentioned that before I think this thread would have been shorter.

also, and I am no hard disk expert, but you say:
Quote:
Because I use SnapRAID on several arrays, and it has a disk failure prediction algorithm that actually saved me several times.
The failure prediction makes calculations based on SMART data, hence a disk with 0 errors, 0 uptime and so on will have 0% failure probability.


This does not mean if you falsely set SMART data to 0 errors then it will have 0% failure probibility. it may SAY that, but it won't be true.

also, you say:
Quote:
I have a screenshot of the SMART data of that same drive made a couple of months before it failed.

but then
Quote:
Well, since it was just a Software error caused by an experiment I made, and the disk had no SMART errors, I trust it can work just fine.


so why do you trust it? why did it fail?

Seems to me you are putting the trust in the RAIDs ability to recover from a failed drive than this drive itself.


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 24th, 2019, 4:21 
Offline

Joined: September 10th, 2019, 10:48
Posts: 9
Location: Italy
HaQue wrote:
It is the first time you have said the disk had no smart errors beforehand. If you had mentioned that before I think this thread would have been shorter.

Sorry for not being clear enough, but my question was about how to restore SMART data.



HaQue wrote:
This does not mean if you falsely set SMART data to 0 errors then it will have 0% failure probibility. it may SAY that, but it won't be true.

I understand that, and that's exactly the reason why I want the SMART failure algorithm to have proper data so that the calculations it makes are based on real data, and not on the re-set data the drive currently has.


HaQue wrote:
so why do you trust it? why did it fail?

I think I answered this question several times, but again:
I was 'playing' with drive tools, and I made (a very noobish indeed) mistake of 'fixing' the wrong disk since I had it connected (both the good and the bad drives) to the same computer. After that, I painfully recovered the data on the 'good' disk, an now I'd want to re-use it fully in my array.
I trust it because it had no SMART errors (at least, It did not have any when last I checked the SMART data) and because as far as I can understand, my erasing of smart data in no way could harm the drive integrity.

HaQue wrote:
Seems to me you are putting the trust in the RAIDs ability to recover from a failed drive than this drive itself.

I have not asked on suggestions on how to protect my data, not here anyway.
While I do appreciate your kind suggestion, but what I'm really looking for is for help in restoring SMART data into my drive.
Thanks for all the kind support


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 24th, 2019, 7:46 
Offline

Joined: August 18th, 2010, 17:35
Posts: 3358
Location: Massachusetts, USA
There are advanced tools allowing to could run a new SMART test and build the attributes with current test findings (e.g. PC3000).
HDDScan tool can run SMART tests - free.
WD Lifeguard seems to have SMART testing ability as well - seems free.

_________________
Hard Disk Drive, SSD, USB Drive and RAID Data Recovery Specialist in Massachusetts


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 25th, 2019, 3:37 
Offline

Joined: September 10th, 2019, 10:48
Posts: 9
Location: Italy
Hi
While PC3000 can find and mark bad sectors and discover reallocated sectord, I doubt it can set values such as Power On Hours, seek errors, maximum recorded temperature and so on..


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 25th, 2019, 7:20 
Offline

Joined: August 18th, 2010, 17:35
Posts: 3358
Location: Massachusetts, USA
vomig wrote:
Hi
While PC3000 can find and mark bad sectors and discover reallocated sectord, I doubt it can set values such as Power On Hours, seek errors, maximum recorded temperature and so on..

For your intended goal, those attributes would not be relevant, right? So, no need to worry about them.

_________________
Hard Disk Drive, SSD, USB Drive and RAID Data Recovery Specialist in Massachusetts


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 26th, 2019, 6:49 
Offline

Joined: September 10th, 2019, 10:48
Posts: 9
Location: Italy
On the countrary, these are the values the failure prediction is based on (along with seek errors, reallocated errors etc.)


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 26th, 2019, 7:08 
Offline

Joined: May 13th, 2019, 7:50
Posts: 73
Location: Nederland
But you had a list of RAW values right? Can you paste those?

_________________
www.disktuna.com - photo repair service


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 26th, 2019, 22:46 
Offline

Joined: August 18th, 2010, 17:35
Posts: 3358
Location: Massachusetts, USA
vomig wrote:
On the countrary, these are the values the failure prediction is based on (along with seek errors, reallocated errors etc.)

The most important and fairly useful are the reallocated and current pending sector count.
But I am curious according to who or what study you created your perception that seek errors and number of hours are the attributes to rely on failure prediction.

_________________
Hard Disk Drive, SSD, USB Drive and RAID Data Recovery Specialist in Massachusetts


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 27th, 2019, 4:04 
Offline

Joined: September 10th, 2019, 10:48
Posts: 9
Location: Italy
@labtech: I don't understand why you keep attacking me instead of providing useful informations on this thread.
But I'll partecipate in this sad game, if that keeps you happy:
I'm not the person behind the study of course: you can ask the developer of SnapRaid and SmartCTL.
I'm an humble user, but you can check the source code of failure prediction algorithms in their softwares here:
https://github.com/amadvance/snapraid
https://github.com/mirror/smartmontools

Now that you curiosity is satisfied,
Is someone willing to please try to stay on topic and try to (kindly, please) answer the original question, ie: "Is there a way to restore SMART data on a Seagate drive"?

Thanks everyone :)


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 27th, 2019, 4:41 
Offline

Joined: May 13th, 2019, 7:50
Posts: 73
Location: Nederland
It appears you feel easily 'attacked'.

People asking questions as to the whys isn't that weird I think because what you intend to do is questionable in more than one way IMHO. One question would be about your intentions and the other how useful is what you want to accomplish anyway.

What the author of smartmon thinks are important attributes for failure prediction, is just one opinion. I don't have time to go through the source code but I wonder if smartmon even tries to come up with it's own guess rather than just go with the manufacturer set thresholds and critical attributes to trigger an alarm. That's what most smart monitors do and that's what makes their use only mildly interesting. You can write a smart monitor without knowing much about hard disks and simply cry wolf as soon as a critical attribute threshold is exceeded.

What labtech probably means is some accessible data (not source code) like the Blackblaze data and Google data offering some larger scale statistics to support the idea that seek error rates are important in predicting failures. I don't seen how this is an attack.

If what you want were easy and common you would probably have had an answer by now. And BTW, I haven't got the foggiest idea on how one would edit/add those values.

EDIT: Search http://www.hddoracle.com, probably the best chance of finding an answer.

_________________
www.disktuna.com - photo repair service


Top
 Profile  
 
 Post subject: Re: WD50EFRX SMART Fix
PostPosted: September 27th, 2019, 4:50 
Offline

Joined: May 13th, 2019, 7:50
Posts: 73
Location: Nederland
If I search hddoracle I find stuff like:

"The SMART modules contain numerous sub-modules, each with its own additional checksum. I didn't know this when I wrote my patch tool. I suspect that in some cases the drive recalculates the additional checksum without complaining, so that't probably why my tool works for others but not for you." - fzabkar

_________________
www.disktuna.com - photo repair service


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 21 posts ]  Go to page 1, 2  Next

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: loki and 29 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group